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Warrants and Derivative Liabilities (Details 3) - Monte Carlo simulations - Emerald Financing | Jun. 30, 2020 Percent $ / shares | Dec. 31, 2019 Percent $ / shares
--- | --- | ---
Class of Warrant or Right [Line Items] |  |
Underlying common stock price | $ / shares | $ 0.16 | $ 0.13
Dividend yield |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input | 0 | 0
Volatility factor |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input | 82.2 | 79.5
Risk-free interest rate |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input | 0.17 | 1.62
Expected term (years) |  |
Class of Warrant or Right [Line Items] |  |
Expected Term | 2 years 7 months 17 days | 3 years 1 month 17 days

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